|Round|Circuit|Location|Date|Pole position|Fastest lap|Winning driver|Headline event|
|---|---|---|---|---|---|---|---|
|1|Albert Whitted Airport|St. Petersburg, Florida|February 23|Leonardo Maia|Dan Di Leo|Leonardo Maia|Grand Prix of St. Petersburg|
|2|Fundidora park|Monterrey|March 23|Leonardo Maia|David Martínez|David Martínez|Monterrey Grand Prix|
|3|Milwaukee Mile|West Allis, Wisconsin|June 1|Victor Gonzalez, Jr.|Scott Poirier|Leonardo Maia|Milwaukee Mile Centennial 250|
|4|Mazda Raceway Laguna Seca|Monterey, California|June 15|Memo Rojas|Leonardo Maia|Dan Di Leo|Grand Prix of Monterey|
|5|Portland International Raceway|Portland, Oregon|June 22|Leonardo Maia|Leonardo Maia|Leonardo Maia|G.I. Joe's 200|
|6|Burke Lakefront Airport|Cleveland, Ohio|July 5|Leonardo Maia|Leonardo Maia|Leonardo Maia|U.S. Bank Cleveland Grand Prix|
|7|Exhibition Place|Toronto|July 13|Leonardo Maia|Leonardo Maia|Memo Rojas|Molson Indy Toronto|
|8|Concord Pacific Place|Vancouver|July 27|Leonardo Maia|David Martínez|Leonardo Maia|Molson Indy Vancouver|
|9|Mid-Ohio Sports Car Course|Lexington, Ohio|August 3|Leonardo Maia|Leonardo Maia|Leonardo Maia|Champ Car Grand Prix of Mid-Ohio|
|10|Circuit Gilles Villeneuve|Montreal|August 24|Memo Rojas|Leonardo Maia|Memo Rojas|Molson Indy Montreal|

Question: how many races were held in canada?
Answer: 3